Press.



No. 789,204. PATENTED MAY 9, 1905.

F. C. CALDWELL.

PRESS.

APPLIOATION FILED APR.11, 1904.

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jaw/r K (Al/kw f 47 A fizfia No. 789,204. PA'TENTED MAY '9, 1905.

F. 0. CALDWELL.

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No. 789,204. PATENTED MAYQ, 1905.

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No. 789,20a.

UNITED STATES Patented May 9, 190 5.

FRANK C. CALDWELL, OF CHICAGO, ILLINOIS.

PRESS.

SPECIFICATION forming part of Letters Patent No. 789,204, dated May 9, 1905.

Application filed April 11, 1904. Serial No. 202,606.

To 11 17. 1117142712, it may concern:

Be it known that l, FRANK (J. CALDWELL, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Presses, of which the following is a description, reference being had to the accompanying drawings, forming part of this specification.

My invention relates more particularly to presses for expressing oil from cotton-seed, linseed, and the like, although applicable to presses for other purposes.

It, has for its object the production of a simple and cflicient press which may be operated by power and by means of which continuous and uninterrupted operation may be carried on. if desired. Its novelty will be hereinafter more fully explained, and particularly set forth in the claims.

In the accompanying drawings, Figure 1 represents a middle vertical section of the press with the pressure-roller and its journals shownin elevation; Fig. 2, a horizontal crosssection approximately on the line 2 2 of Fig. 1; Fig. 3, an enlarged top plan view of the gearing at the top of the press; and Fig. 4:, a horizontal section on the line 4 4 of Fig. 1.

The same letters of reference are employed to indicate corresponding parts in the several views.

1n the present instance the outer shell or casing comprises a middle body portion A, having a tapering or conical interior, forming the pressure-chamber; a bottom cap B, secured to the flanged lower end of the body A, and a top portion or head U, comprising a central hub a, radial arms 7), and afianged ring 0, bolted to the flanged upper end of the body A, Figs. 1 and 4. Located within this structure is the tapering or cone-shaped pressure-roller .1), whose lower journal (Z has its bearing in a box 1:, provided for it in the lower cap B, this bearing being of such construction as to permit a slight gyratory motion of the roller D as well as its axial rotation.

The upper journal cl of the roller D has its immediate bearing in an eccentric bushing f, which in turn has its bearing in the central hub a of the top 0 of the press. Secured to this bushing f above the hub a is abcvel-gear E, with which meshes a bevel-gear F, fast upon a shaft (ii, to which suitable power is applied. Rotation of the bushing f thus produced will move the upper journal of of the roller 1) in a circle, and thereby give the roller a gyratory motion upon the relatively fixed bearing at its lower end. The roller is also given a rotary movement by means of a gear H, fast upon its upper end and cooperating with an internal gear I, formed upon the interior of the bevel-gear E, Figs. 1 and 3.

Neither the details of the supporting-bearings for the upper and lower journals of the pressure-roller nor the gearing by which it is driven form in themselves any part of my invention, since they are or may be similar to those commonly found in ore-crushingmachines employing vertical crushing-rolls having a rotary and a gyratory movement.

The roller D is provided upon one side with spirally extending corrugations or screwthreads, in the present instance extending approximately half-way around the roller, ex cept at its lower end, where they are extended entirely around it. The opposite side or remainder of the roller is left plain.

The inner wall of the pressure-chamber A within the body portion A of the casing is formed of or lined with metal bars or strips J, extending from its upper to its lower end, Figs. 1 and 2, and in the present instance seated at their lower ends upon an inclined support g, provided for them in the bottom of the cap B. These strips or bars J are seated radially to the central axis of the pressure-chamber in longitudinal seats or grooves provided for them in the wall of the pressurechamber, Fig. 2, and their converging inner edges are so slightly separated from each other as to prevent outward passage of solid matter between them, while permitting the passage of oil or other liquid. The longitudinal tapering spaces or channels between the strips J communicate at their lower ends with an annularspace 7L, surrounding the support 9 for the lower ends of the strips, which annular space it communicates by a passage j with a discharge-outlet K, formed in the bottom cap B. The annular space between the pressure-roller D and the wall of the pressurechamber (the inner faces of the strips J) com municates at its lower end around the lower screw-threaded end of the roller with the discharge-outlet L.

The operation of the parts constructed as above described is as follows: Power being applied to the driving-shaft G and the pressure-roller D thereby given both a rotary and a gyratory motion, the properly-ground cotton-seed, linseed, or other like oil or liquidbearing material is fed into the upper end of the pressure-chamber A through the openings between the radial arms of the head 0, Fig. 4, and is deflected by the conical upper end of the roller D into the annular space surrounding it. The gyratory motion given the roller causes its plain and its corrugated surfaces to be alternately and successively pressed against the wall of the pressure-chamher, while the roller is being at the same time rotated upon its axis. The pressure of the plain surface of the roller against the wall of the chamber compresses the oil-bearing material between the two and expresses the oil from such material and forces it outward between the strips J, constituting the inner wall or lining of the chamber. This pressing operation of the plain surface of the roller is immediately followed by engagement of the spirally corrugated portion of the roller with the surface against which the oil bearing material has been forced by the plain surface of the roller, and this engagement of the spiral corrugations of the roller with the material adhering to the wall of the chamber as a result of the pressing operation will, owing to the rotation of the roller upon its central axis, as well as its gyratory motion. scrape such material from the wall and force it downward. In this manner the entire inner wall of the chamber surrounding the pressure-roller D is subjected to the pressing action of the plain surface of the roller, which pressing action is immediately and continuously followed by the force-feeding action of the corrugated surface of the roller. so that the oil-bearing material fed in at the top of the press is gradually forced downward through the press, while the oil is expressed therefrom. The oil passes downward through the channels between the bars J into the annular space 71 at their lower ends and escapes through the passage or passages j into the discharge-outlet K. The solid material from which the oil has been expressed is gradually forced downward into the contracted lower end of the pressure-chamber, where it is engaged by the spiral corrugations extending entirely around the roller and forced outinto the large discharge-chamber L, the extension of the spiral corrugations all the way around the lower end of the roller serving to facilitate this operation.

While the foregoing description of the op eration of the press has assumed that the oil or other liquid bearing material i'sor may be fed into the top of the press by hand through the openings in the head C, a closed cap and mechanical means for continuously feeding the material into the press through a suitable opening in the cap may be employed, so that a continuous and uninterrupted operation may be mechanically carried on, if desired.

Having thus fully described my invention, I claim 1. In a press, the combination of a tapering or conical pressure-chamber, a pressure-roller located therein and provided with a pressingsurface and with a force-feeding surface, both cooperating with the inner wall of the chamher, and means for giving such roller both a rotary and a gyratory movement; substantially as described.

2. In a press, the combination of a tapering or conical pressure-chamber provided with longitudinal discharge-passages, a pressureroller located therein and having a pressingsurface and a force-feeding surface, both cooperating with the inner wall of the chamber, and means for giving said roller both a rotary and a gyratory movement; substantially as described.

3. In a press, the combination of a tapering or conical pressure-chamber, a tapering or conical pressureroller located therein and having a pressing-surface and a force-feeding surface, both cooperating with the inner wall of the chamber, and means for giving said roller both a rotary and a gyratory movement; substantially as described.

4. In a press, the combination of a tapering or conical pressure-chamber provided with longitudinal discharge-channels, a tapering or conical pressureroller located therein and having a pressing-surface and a force-feeding surface, both cooperating with the inner wall of the chamber, and means for giving said roller both a rotary and a gyratory movement; substantially as described.

5. In a press, the combination of a tapering or conical pressure-chamber, a pressure-roller located therein and provided with a spirallycorrugated force-feeding surface and with a relatively plain pressing-surface, both cooperating with the inner wall of the chamber, and means for giving said roller both a rotary and a gyratory movement; substantially as described.

6. In a press, the combination of a tapering or conical pressure-chamber, a tapering or conical pressure-roller located therein and provided with a spirally-corrugated forcefeeding surface and with a relatively plain pressing-surface, and means for giving said roller both a rotary and a gyratory movement; substantially as described.

7. In a press, the combination of a tapering or conical pressure-chamber, a tapering or conical pressure-roller located therein and having a relatively plain pressing-surface and a spirally-corrugated force-feeding surface, the spiral corrugations extending entirely around the roller at the discharge end of the chamber, and means for giving said roller both a rotary and a gyratory movement; substantially as described.

8. In a press, the combination of a tapering or conical pressure-chamber provided with longitudinal discharge-channels, a tapering or conical pressure-roller located therein a nd provided with a spirally-corrugated forcefeeding surface and with a relatively plain p'ressingsurface, and means for giving said roller both a rotary and a gyratory movement; substantially as described.

9. In a press, the combination of a tapering or conical pressure-chamber provided with longitudinal discharge-channels, a pressureroller located therein and provided with a relatively plain pressing-surface and with a spirally-corrugated force-feeding surface, the spiral corrugations extending entirely around the roller at the discharge end of the chamber, and means for giving said roller both a rotary and a gyratory movement; substantially as described.

10. In a press, the combination of a pressure-chamber through which the material to be operated upon is adapted to pass, a pressure-roller located therein and having a pressing-surface and a force-feeding surface, both cooperating with the inner wall of the chamber, and means for rotating said roller and also giving it an eccentric movement; substantially as described.

11. In a press, the combination of a pressure-chamber through which the material to be operated upon is adapted to pass, a pressure-roller located therein and having a relatively plain pressing-surface and a spirallycorrugated force-feeding surface, and means for rotating said roller and also giving it an eccentric movement; substantially as described.

12. In a press, the combination of a pressure-chamber through which the material to be operated upon is adapted to pass, and provided with longitudinal discharge-channels, a pressure-roller located therein and provided with a relatively plain pressure-surface and with a spirally-corrugated force-feeding surface, and means for rotating said roller and also giving it an eccentric movement; substantially as described.

13. In a press, the combination of a pressure-chamber through which the material to be operated upon is adapted to pass, a tapering or conical pressure-roller located therein and having a pressure-surface and a forcefeeding surface, both cooperating with the inner wall of the chamber, and means for giving said roller both a rotary and a gyratory movement; substantially as described.

14:. In a press, the combination of a pressure-chamber through which the material to be operated upon is adapted to pass, a tapering or conical pressure-roller located therein and having a relatively plain pressing-surface and a spirally-corrugated force-feeding surface, and means for giving said roller both a rotary and a gyratory movement; substantially as described.

15. In a press, the combination of a pressure-chamber through which the material to be operated upon is adapted to pass, a taper ing or conical pressure-roller located therein and having a relatively plain pressing-surface and a spirally-corrugated force-feeding surface, the spiral corrugations extending entirely around the roller at one end, and means forgiving said roller both a rotary and a gyratory movement; substantially as described.

16. In a press, the combination of a pressure-chamber through which the material to be operated upon is adapted to pass, and provided with longitudinal discharge-channels, a tapering or conical pressure-roller located therein and provided with a relatively plain pressing-surface and with a spirally-corrugated force-feeding surface, and means for giving said roller both a rotary and a gyratory movement; substantially as described.

17. In a press, the combination of a vertical pressure-chamber tapering from its upper to its lower end, a correspondingly-tapered or conical pressure roller located therein and provided with a pressure-surface and with a spirally-corrugated force-feeding surface, and means for rotating said roller and for giving its upper end an eccentric movement; substantially as described.

18. In a press, the combination of a vertical pressure-chamber tapering from its upper to its lower end, a correspondingly-tapered or conical pressure-roller located therein and projecting at its lower end through the contracted lower end of the chamber, said roller having a pressing-surface and a spirally-corrugated force-feeding surface, and the spiral corrugations extending entirely around the roller at its lower end, and means for rotating said roller and for giving its upper end an eccentric movement; substantially as described.

19. In a press, the combination of a vertical pressure-chamber tapering from its upper to its lower end and provided with longitudinal discharge channels, a correspondingly tapered or conical pressure-roller located therein and having a pressing-surface and a forcefeeding surface, and means for rotating said roller and for giving its upper end an eccentric movement; substantially as described.

20. In a press, the combination of a vertical pressure-chamber tapering from its upper to its lower end and provided with longitudinal discharge-passages communicating at their lower ends with an annular chamber or pas- IIO sage, a correspondingly-tapered or conical pressure-roller located therein and provided with a pressing-surface and a force-feeding surface, the annular space around said roller communicating at its lower end with a discharge-outlet independent of the aforesaid annular chamber or passage, and means for giving said roller both a rotary and a gyratory movement; substantially as described.

21. In a press, the combination of a vertical pressure-chamber tapering from its upper to its lower end and provided with longitudinal discharge-passages communicating at their lower ends with an annular chamber or passage, a correspondingly-tapered or conical pressure-roller located therein and provided with a pressing-surface and a spirally-corrugated force-feeding surface, the lower end of said roller projecting through the contracted lower end of the chamber and having the spiral corrugations extended entirely around it, the annular passage between the roller and the contracted lower end of the chamber communieating with a discharge-chamber independent of the annular chamber or passage before mentioned, and means for giving the pressure-roller both a rotary and a gyratory movement; substantially as described.

22. In a press, the combination of a tapering or conical pressure-chamber, a pressureroller located therein and provided with a spirally-corrugated force-feeding surface extending part way around the roller, the re mainder of the surface thereof being plain and acting as a pressing-surface, both the corrugated and plain surfaces cooperating with the inner wall of the chamber, and means for giving such roller both 'a rotary and a gyratory movement; substantially as described.

23. In a press, the combination of a tapering or conical pressure-chamber provided on its inner wall with means for draining the liquid expressed from the material being acted upon, a pressure-roller in said chamber, and means for giving said roller both a rotary and a gyratory movement; substantially as described.

24. In a'press, the combination of a tapering or conical pressure-chamber provided on its inner wall with means for draining the liquid expressed from the material being acted upon, a pressure-roller in said chamber, said roller having along its length both a pressing-surface and a force-feeding surface for pressing and feeding the material, both surfaces cooperating with the inner wall of the chamber, and means for giving the roller both a rotary and a gyratory movement; substantially as described.

25. In a press, the combination of a tapering or conical pressure-chamber provided on its inner wall with means for draining the liquid expressed from the material being acted upon, a pressure-roller in said chamber, said roller having aspirally-corrugated force-feeding surface and with a relatively plain pressing-surface, and means for giving said roller both a rotary and a gyratory movement; substantially as described.

26. In a press, the combination of a tapering or conical pressure-chamber provided on its inner wall with means for draining the liquid expressed from the material being acted upon, a pressure-roller in said chamber, said roller having a relatively plain pressing-surface and a spirally-corrugated force-feeding surface, the spiral corrugations extending entirely around the roller at the discharge end of the chamber, and means for giving said roller both a rotary and a gyratory movement; substantially as described.

27. In a press, the combination of a tapering or conical pressure-chamber, a pressureroller located therein and provided on opposite sides with a pressing-surface and a forcefeeding surface, said force-feeding surface extending entirely around the roller at its discharge end, and means for giving said roller both agyratory and a rotary movement; substantially as described.

28. In a press, the combination of a tapering or conical pressure-chamber, a pressureroller located therein and provided on opposite sides with a relatively plain surface and a spirally-corrugated surface, said latter surface extending entirely around the rolier at its discharge end, and means for giving said roller both a gyratory and a rotary movement; substantially as described.

29. In a press, the combination of a tapering or conical pressure-chamber provided along the length of its inner wall with a series of openings for draining the liquid expressed from the material being acted upon, a pressure-roller located in said chamber and provided with. both a pressing-surface and a force-feeding surface cooperating with the inner wall of the chamber, and means for giving said roller both a rotary and a gyratory movement; substantially as described.

FRANK (J. CALDWELL.

Witnesses:

EDWARD RECTOR, LoUIs B. ERWIN. 

